470 MEMOIRS OF THE CARNEGIE MUSEUM 



Thoracantlm apta Walker, Trans. Ent. Soc. London (3), I., 1862, p. 384, d".— West 



wood, Thesaur. ent. Oxon., 1874, p. 153 ; PI. 28, f. 3. 

 Acrostela apta Shepp, The Entom., XXVL, 1894, p. 188.— Dalla Torre, Cat. Hyni., 

 v., 1898, p. 366. 

 Brazil : Santarem and \\\\?i Nova ; Chapada, in ^larcli, April and November; 

 8antarem. Twelve male and two female specimens. 



• 



Thoracantha romandii Guerin. 



Thoracantha romandii Guerin, Iconogr. Regne anim., \'II., Ins., 1845, p. 415. — 

 Dalla Torre, Cat. Hyin., V., 1898, p. 366. 

 Colombia. 



Geuus UROMELIA Kerby. 

 Uromelia striata (Perty). 



Tlwmcantha striata Perty, Delect, anim. artic. Brasil, 1833, p. 134; T. 28, f. 15 



and 16. — Blanchard, Hist. nat. In,s., III., 1840, p. 257. 

 Uromelia striata Kirby, Journ. Linn. Soc. London, Zool., XX., 1886, p. 37. — Dalla 



Torre, Cat. Hym., V., 1898, p. 367. 

 Thoracantha flabellatus Westwood, Proc. Soc. London, III., 1835, p. 52, J'. 

 Thoracantha aculeata Westwood, opus cit, 1835, 9. 

 Chalcis {Thoracantha) aculeata Blanchard, Cuvier : Regne anim., Ed. 3", Ins., II. 



1849 ; T. ] 13, f. 8. 

 Thoracantha aculeata Westwood, Thesaur. ent. (Jxon., 1874, p. 154; PI. 28, f. 9. 

 Lasionychus Jiabellatus Shipp, The Entom., XXV., 1894, p. 188. — Dalla Torre, Cat. 



Hym., v., 1898, p. 367. 

 Brazil : Santarem. Five specimens. 



Genus DICCELOTHOBAX Ashmead. 



Allied to Lxtocantha Shipp, but easily distinguished by the deep impressions on 

 the mesonotum and the scutellum, and by the very broad and different shape of the 

 scutellar pi-oces.ses, which form a broad shield over the abdomen. 



Diccelothorax platycerus, sp. nov. 

 (Plate XXXV., Fig. 3.) 



Female. — Length 3.8 mm. J^neous black, the anteniue, the legs, except the 

 coxfe and a median longitudinal stripe on the closely united scutellar projections, 

 testaceous. The disk of the mesonotum and the scutellum are coricavely excavated, 

 the bottom of the concavities being smooth and highly polished, the scutellar proc- 

 esses being longitudinally striated. The pronotum is greatly elevated and coarsely 



